Recoil absorber for a firearm



'Feb- 1952 A. DUCHARME 3,01 43 RECOIL ABSORBER FOR A FIREARM FiledJuly 1. 1959 IVENT R- ATI'U RN EYS 3,019,543 RECOIL ABSORBER FOR AFIREARM Alfred Ducharme, Bald Hill Trailer Camp, West Warwick, R.I.Filed July 1, 1959, Ser. No. 824,235 2 Claims. (Cl. 42-74) Thisinvention relates to shock and recoil absorbers, such as used in stocksof firearms, and in particular a telescoping shell positioned over apair of plates with a stationary or base plate secured to the end of astock of a firearm and with a traveling plate carried by spaced studsextended through the plate and threaded in the baseplate',andwithsprings around the studs and between the plates whereby the recoilof a gun in the stock on which the absorber is positioned compresses thesprings permitting the flange of the shell to telescope-over the stockrelieving the shoulder of a person firing the gun from shock.

The purpose of this invention is to provide an improved absorber andrecoil for firearms to prevent the shock load being taken by theshoulder of a person firing the gun.

Various types of resilient devices have been provided for absorbing theshock load of firearms and although some of such devices areincorporated in the stocks of the firearms it is ditficult to evenlydistribute the load so that a shoulder is completely relieved of shock.With this thought in mind this invention contemplates a firearm shockabsorber wherein a traveling plate is carried by studs extended from astationary or base plate with a telescoping shell enclosing the platesand with the traveling plate urged away from the stationary plate byspaced springs.

The object of this invention is to provide a shock absorber for firearmsin which the recoil load is evenly distributed over the end surface ofthe stock of the firearm.

Another object of the invention is to provide a shock absorber forfirearms in which an absorber may be installed on stocks of firearms nowin use without changing the stocks or firearms.

A further object of the invention is to provide a shock and recoilabsorber for firearms in which the absorber is of a simple andeconomical construction.

With these and other objects and advantages in view the inventionembodies a firearm recoil and shock absorber including spaced parallelplates having studs extended through openings in one of the plates andthreaded into the other plate, with springs extended around the studsand positioned between the plates and with a shell enclosing the platesand positioned to slide over the end portion of the stock upon which thestationary plate is mounted.

Other features and advantages of the invention will appear from thefollowing description taken in connection with the drawing, wherein:

FIGURE 1 is a longitudinal section through a shock absorbing unit on theend of a stock or a firearm, showing the unit in the free position.

FIGURE 2 is a longitudinal section similar to that shown in FIGURE 1showing the unit in the compressed position.

FIGURE 3 is a cross-section through the intermediate part of theabsorber showing springs on studs connecting plates of the absorber, thesection being taken looking toward the traveling plate of the absorber.

FIGURE 4 is a cross-section taken on substantially the same line as.that of FIGURE 3 looking in the opposite direction, showing the mountingand base plate of the absorber.

FIGURE 5 is an exploded view showing the parts of the enclosed recoilabsorber and showing the parts in their relative positions.

Referring now to the drawing wherein like reference characters denotecorresponding parts, the improved recoil absorber of thisinvention-includes a stationary or base plate 10 designed to be mountedon the end of a stock 11' of a firearm, a. traveling plate 12 spacedfrom and parallel to the base plate 10, studs 13 and 14 having threadedends 5 and 16, respectively, threaded in bushings 17 and 18 positionedin the base plate 10, springs 19 and 20 extended around the studs andpositioned between the plates 10 and 12 and a shell 15 that provides acover that is adapted to telescope over the base plate 10 and adjoiningportion of the stock 11.

The plate 10 is provided with threaded openings 21 and 22 in which thebushings 17 and 18 are threaded, respec tively, and openings 23 and 24through which screws 25 extend for mounting the base plate on the stock'11 of the, firearm. The screws are threaded into the end portion of thestock, as shown in FIGURES l and 2. I

The studs 13 and 14 have sleeves 26 provided with portions 27 of areduced diameter slidably mounted thereon and the bushings 17 and 18,which are provided with threaded outer surfaces 23, are provided withcounterbores 29 into which the sections 27 of the sleeves 26 extend, asshown in FIGURES 1 and 2. The sleeves 26 are provided with shoulders 30and 31 that engage shoulders 32 and 33 of the bushings 17 and 18 tolimit inward movement of the travelling plate 12 on the sleeves 26 onthe studs 13 and 14. Therefore since the plate 1-2 moves with thesleeves 26 the inward movement of the plate 12 is also limited in thesame manner as is the inward movement of the sleeves 26.

The traveling plate 12 is provided with counter-sunk openings 34 and 35in which frusto-conical-shaped heads 36 and 37 of the studs arepositioned with the parts in free positions. The heads 36 and 37 limitoutward movement of the traveling plate 12.

The shell 15 is secured to the traveling plate 12 by screws 38 and 39,heads 40 of which are positioned in openings 41 in the end surface ofthe shell 15 and the opposite or threaded ends of which are threaded inopenings 4-2 and 43 of the traveling plate 12.

The shell or cover 15 is provided with a continuous flange 44 thatslides over the peripheral surface of the base plate 10 and adjoiningportion of the stock 11 when a shock load or the recoil of the firearmcompresses the springs 19 and 20.

The recoil absorber is also provided with booster springs 45 and 46 thatextend around the studs 13 and 1-4 and that are positioned in thebushings 17 and 18. One of the ends of the springs 45 and 56 bearsagainst shoulder 47 in the bushings 17 and 18 and the opposite ends bearagainst the ends of the sections 27 of the sleeves 26. The boostersprings provide means for urging the sleeves 26 against the innersurface of the plate 12.

With the parts assembled as illustrated and described, and installed onthe end of the stock of a firearm the recoil resulting from firing thefirearm drives the base plate 10 rearwardly compressing the springs 19and 20 whereby the springs absorb the load or shock and the shoulder ofthe person firing the firearm is, consequently, protected.

The improved shock load and recoil absorber of this invention providescushioning means in the stock of a firearm whereby substantially allshock loads are eliminated.

It will be understood that modifications, within the scope of theappended claims, may be made in the design and arrangement of the partswithout departing from the spirit of the invention.

What is claimed is:

1. In a recoil absorber for a firearm, the combination Patented Feb. 6,19 62 which comprises a mounting plate, means for attaching the mountingplate to the end ofva stock of a firearm, bushings threaded in saidmounting plate, studs threaded in said bushings and positioned normal tothe mounting plate, a traveling plate slidably mounted on said studs,sleeves slidably mounted on the studs, movable with and in unison withthe travelling plate and positioned between the mounting and travelingplates, said bushings having counter bores therein and said sleeveshaving a reduced portion thereon that are receivable in the bores insaid bushings, springs extended around the sleeves and bushings andpositioned between the plates, coacting shoulders on said bushings andsaid sleeves for limiting the inward travel of said traveling plate,enlarged heads on said studs for limiting the outward movement of saidtravelling plate, a cover positioned over said plates and springs, andmounted to slide over the adjacent portion of the stock of a firearmupon which the absorber is mounted, and means for securing the cover tothe traveling plate.

2. In a recoil absorber for a firearm, the combination which comprises aplate designed to be positioned on the end of a stock of a firearm, saidplate having openings therethrough for screws for securing the plate inposition upon the stock of a firearm, said plate having spacedinternally threaded openings therein, bushings threaded in the openingsof the plate, studs threaded in the bushings and extended in parallelrelation and normal to the plate,

' a traveling plate having openings therein for receiving,

the studs slidably mounted on the studs and positioned in parallelrelation to the plate in which the studs and bushings are mounted,sleeves slidably mounted on the studs and movable with the travellingplate, springs extended around, the sleeves and positioned between theplates, the studs having heads on extended ends thereof for limitingoutward rhovement of the, traveling plate, coacting shoulders on saidsleeves and said bushings for limiting the inward movement of saidtravelling plate, a shell having a flange enclosing the plates andsprings and mounted to slide over a stock of a firearm uponwhich theabsorber is mounted, and screws extended through the shell and threadedin the traveling plate for securing the shell in position on theabsorber.

References Cited in the file of this patent UNITED STATES PATENTS832,213 Schmidt Oct. 2, 1906 935,163 Parker Sept. 28, 1909,

1,964,649 Stetson June 26, 1934 2,754,608 Stieffel July 17, 1956 FOREIGNPATENTS 8,519 Germany Jan. 7, 1880 8,892 Great Britain -r-. 1894

